/*body {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.main-container {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    backdrop-filter: blur(10px);
    margin: 20px;
    padding: 40px;
}

.header-title {
    background: linear-gradient(45deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 700;
    text-align: center;
    margin-bottom: 40px;
}

.upload-zone {
    border: 3px dashed #667eea;
    border-radius: 15px;
    padding: 60px 20px;
    text-align: center;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

    .upload-zone:hover {
        border-color: #764ba2;
        transform: translateY(-5px);
        box-shadow: 0 15px 30px rgba(102, 126, 234, 0.2);
    }

    .upload-zone.dragover {
        border-color: #28a745;
        background: linear-gradient(135deg, rgba(40, 167, 69, 0.1) 0%, rgba(102, 126, 234, 0.1) 100%);
    }

.upload-icon {
    font-size: 4rem;
    color: #667eea;
    margin-bottom: 20px;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-10px);
    }
}

.form-group {
    margin-bottom: 25px;
}

.form-control, .form-select {
    border-radius: 10px;
    border: 2px solid #e9ecef;
    padding: 12px 15px;
    transition: all 0.3s ease;
}

    .form-control:focus, .form-select:focus {
        border-color: #667eea;
        box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
    }

.btn-primary {
    background: linear-gradient(45deg, #667eea, #764ba2);
    border: none;
    border-radius: 10px;
    padding: 12px 30px;
    font-weight: 600;
    transition: all 0.3s ease;
}

    .btn-primary:hover {
        transform: translateY(-2px);
        box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
    }

.progress-container {
    display: none;
    margin-top: 30px;
    padding: 30px;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    border-radius: 15px;
    border: 1px solid rgba(102, 126, 234, 0.2);
}

.progress {
    height: 20px;
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 15px;
    background: rgba(255, 255, 255, 0.3);
}

.progress-bar {
    background: linear-gradient(45deg, #28a745, #20c997);
    transition: width 0.5s ease;
    position: relative;
    overflow: hidden;
}

    .progress-bar::after {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: linear-gradient(45deg, transparent 40%, rgba(255,255,255,0.3) 50%, transparent 60%);
        animation: shimmer 2s infinite;
    }

@keyframes shimmer {
    0% {
        transform: translateX(-100%);
    }

    100% {
        transform: translateX(100%);
    }
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.stat-card {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(255, 255, 255, 0.7) 100%);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    border: 1px solid rgba(102, 126, 234, 0.1);
    transition: transform 0.3s ease;
}

    .stat-card:hover {
        transform: translateY(-5px);
    }

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: #667eea;
}

.stat-label {
    color: #666;
    font-size: 0.9rem;
}

.log-container {
    background: #2c3e50;
    border-radius: 10px;
    padding: 20px;
    margin-top: 20px;
    max-height: 300px;
    overflow-y: auto;
    font-family: 'Courier New', monospace;
    color: #ecf0f1;
}

.log-entry {
    margin-bottom: 8px;
    padding: 5px;
    border-radius: 5px;
}

.log-info {
    color: #3498db;
}

.log-success {
    color: #2ecc71;
}

.log-warning {
    color: #f39c12;
}

.log-error {
    color: #e74c3c;
}

.download-btn {
    background: linear-gradient(45deg, #28a745, #20c997);
    border: none;
    border-radius: 10px;
    padding: 12px 25px;
    color: white;
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    margin-top: 15px;
    transition: all 0.3s ease;
}

    .download-btn:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 16px rgba(40, 167, 69, 0.3);
        color: white;
        text-decoration: none;
    }

.retry-info {
    background: linear-gradient(135deg, rgba(255, 193, 7, 0.1) 0%, rgba(255, 152, 0, 0.1) 100%);
    border: 1px solid rgba(255, 193, 7, 0.3);
    border-radius: 10px;
    padding: 15px;
    margin-top: 15px;
}

.pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }

    100% {
        transform: scale(1);
    }
}

.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
    margin-right: 10px;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}
*/


.main-container {
    padding: 20px;
}

.header-title {
    color: #2c3e50;
    margin-bottom: 30px;
    text-align: center;
    font-weight: bold;
}

.upload-zone {
    border: 2px dashed #007bff;
    border-radius: 10px;
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: #f8f9fa;
}

    .upload-zone:hover, .upload-zone.dragover {
        border-color: #0056b3;
        background: #e3f2fd;
    }

.upload-icon {
    font-size: 3rem;
    color: #007bff;
    margin-bottom: 15px;
}

.form-group {
    margin-bottom: 20px;
}

.progress-container {
    margin-top: 30px;
    display: none;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    margin: 20px 0;
}

.stat-card {
    background: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 8px;
    padding: 15px;
    text-align: center;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: bold;
    color: #007bff;
}

.stat-label {
    font-size: 0.85rem;
    color: #6c757d;
    margin-top: 5px;
}

.log-container {
    max-height: 300px;
    overflow-y: auto;
    background: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: 8px;
    padding: 15px;
    margin: 20px 0;
}

.log-entry {
    padding: 5px 0;
    border-bottom: 1px solid #e9ecef;
    font-size: 0.9rem;
}

    .log-entry:last-child {
        border-bottom: none;
    }

.log-info {
    color: #17a2b8;
}

.log-success {
    color: #28a745;
}

.log-warning {
    color: #ffc107;
}

.log-error {
    color: #dc3545;
}

.progress {
    height: 25px;
    border-radius: 15px;
}

.progress-bar {
    transition: width 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
}

.pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }

    100% {
        opacity: 1;
    }
}

.loading-spinner {
    border: 2px solid #f3f3f3;
    border-top: 2px solid #007bff;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
    display: inline-block;
    margin-right: 8px;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

.download-btn {
    display: inline-block;
    padding: 12px 24px;
    background: #28a745;
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: bold;
    transition: background 0.3s ease;
}

    .download-btn:hover {
        background: #218838;
        color: white;
        text-decoration: none;
    }

.retry-info {
    background: #fff3cd;
    border: 1px solid #ffeaa7;
    border-radius: 8px;
    padding: 15px;
    margin: 15px 0;
}